Capable But Command Failed' or 'Disk boot failure. If you attempt to boot up from such drive or read any data from it you would get 'Primary Master Hard Disk Fail' or 'No operating system found' or 'USB Device malfunctioned' error or 'S.M.A.R.T.

identifies fine but fails to read any data or boot up operating system giving I/O device errors whenever you try to access LBA sectors.

shows up with wrong S/N (for example WDC-ROM SN# XYZ-) or capacity,.

identifies with its factory alias(for example WDC ROM MODEL-MAMMOTH-, WDC ROM MODEL-HAWK-),.

In such case the drive usually spins up fine, it doesn't click but has one of the following symptoms: If one of the modules gets corrupted the hard drive fails to initialize correctly and stops working making the data inaccessible. Service Area occupies the negative cylinders of the surface and contains a number of firmware modules.

Main part of firmware is stored on the platters in so-called Service Area.

The computer still makes the chime sound when the USB drive is plugged in or unplugged but the drive doesn't show up.Р”Р„ll Western Digital hard drives are also well-known for their firmware problems.Р”Р‡irmware of the drive is not located on the logic board as most people think. Now when the drive is powered on it makes 3 clicks, stops, 3 more clicks, then spins down and stops. Yesterday my WD10EADS-00L5B(by Western Digital) stopped working when I cycled the power strip off and on.

Western digital wd10eads new